Media Server 25.1
Media Server Help

# Barcode Analysis Results

The following XML is a single record produced during barcode analysis:

    <record>
      ...
      <trackname>barcode.Result</trackname>
      <BarcodeResult>
        <id>b8c4331e-6058-4786-83d9-a43e605f463e</id>
        <text>some text</text>
        <barcodeType>Code-128</barcodeType>
        <region>
          <left>94</left>
          <top>66</top>
          <width>311</width>
          <height>98</height>
        </region>
        <parentID>4d69390f-a8c4-4c5d-a0b0-705a3f98aa9b</parentID>
      </BarcodeResult>
    </record>

The record includes the following information:

- The `id` element provides a unique identifier for the detected barcode. The barcode analysis engine issues an ID for each detected appearance of a barcode. If you are detecting barcodes in video and consecutive frames show the same barcode in a near-identical location, all records related to that appearance will have the same ID.

  For example, if a barcode appears in the same location for fifty consecutive video frames, the engine uses the same ID for each record in the data track and produces a single record in the result track. The record in the result track will have a timestamp that covers all fifty frames.

  If the barcode moves to a different location on the screen, or disappears and then reappears, the engine considers this as a new detection and produces a new ID and a new record in the result track.

- The `text` element contains the data encoded by the barcode. If Media Server detects a barcode with a supplement, for example EAN-13+EAN-2, the `text` element contains the digits from both parts of the barcode, separated by a hyphen.

- The `barcodeType` element contains a string which describes the type of the detected barcode. This can be any of the following values:

  Codabar Code-128 Code-39 Code-93 Datalogic 2/5 Data Matrix EAN-13 EAN-13+EAN-2 EAN-13+EAN-5 EAN-8 EAN-8+EAN-2 EAN-8+EAN-5 I25 | IATA 2/5 Industrial 2/5 Matrix 2/5 Patch Code PDF417 QR UPC-A UPC-A+EAN-2 UPC-A+EAN-5 UPC-E UPC-E+EAN-2 UPC-E+EAN-5

- The `region` element describes the position of the barcode in the ingested media. If Media Server detects a barcode with a supplement, for example EAN-13+EAN-2, the region includes both parts of the barcode.

- The `parentID` element is empty, unless you configure the analysis engine with `Region=Input` in which case it contains the UUID of the input record. This provides a way to link the result with other records (from another analysis task) that supplied the region to analyze. To generate a single record combining the information, you can use the Combine ESP engine and the example Lua script `parentuuidMatch.lua`.

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Version 25.1 | Last updated January 2025

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Product: Knowledge Discovery Media Server 25.1

Topic Title: Barcode Analysis Results